Error Code Portal
GitHubGitHub REST API validationError code

already_exists

already exists

Alternative forms: errors[].code=already_exists

What does this code mean?

Code already_exists · An issue reported by GitHub REST API validation.

Official explanation · Original text

Another resource has the same value as one of your parameters. This can happen in resources that must have some unique key (such as label names).

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

GitHub REST API validation error codes ↗

Creator: GitHub, Inc. and contributors
License: Creative Commons Attribution 4.0 International
Checked on: 2026-11-12

Modifications: Extracted the six official errors[].code values from the Validation Failed table; Markdown stripped; original Korean descriptions added. These are REST validation codes, not invented top-level API codes.

Source details · Original licenses and notices